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      1 // Copyright 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "base/bind.h"
      6 #include "net/base/net_errors.h"
      7 #include "remoting/base/rsa_key_pair.h"
      8 #include "remoting/protocol/authenticator_test_base.h"
      9 #include "remoting/protocol/channel_authenticator.h"
     10 #include "remoting/protocol/connection_tester.h"
     11 #include "remoting/protocol/fake_authenticator.h"
     12 #include "remoting/protocol/third_party_authenticator_base.h"
     13 #include "remoting/protocol/third_party_client_authenticator.h"
     14 #include "remoting/protocol/third_party_host_authenticator.h"
     15 #include "remoting/protocol/token_validator.h"
     16 #include "testing/gmock/include/gmock/gmock.h"
     17 #include "testing/gtest/include/gtest/gtest.h"
     18 #include "third_party/webrtc/libjingle/xmllite/xmlelement.h"
     19 
     20 using testing::_;
     21 using testing::DeleteArg;
     22 using testing::SaveArg;
     23 
     24 namespace {
     25 
     26 const int kMessageSize = 100;
     27 const int kMessages = 1;
     28 
     29 const char kTokenUrl[] = "https://example.com/Issue";
     30 const char kTokenScope[] = "host:a (at) b.com/1 client:a (at) b.com/2";
     31 const char kToken[] = "abc123456xyz789";
     32 const char kSharedSecret[] = "1234-1234-5678";
     33 const char kSharedSecretBad[] = "0000-0000-0001";
     34 
     35 }  // namespace
     36 
     37 namespace remoting {
     38 namespace protocol {
     39 
     40 class ThirdPartyAuthenticatorTest : public AuthenticatorTestBase {
     41   class FakeTokenFetcher : public ThirdPartyClientAuthenticator::TokenFetcher {
     42    public:
     43     virtual void FetchThirdPartyToken(
     44         const GURL& token_url,
     45         const std::string& scope,
     46         const TokenFetchedCallback& token_fetched_callback) OVERRIDE {
     47      ASSERT_EQ(token_url.spec(), kTokenUrl);
     48      ASSERT_EQ(scope, kTokenScope);
     49      ASSERT_FALSE(token_fetched_callback.is_null());
     50      on_token_fetched_ = token_fetched_callback;
     51     }
     52 
     53     void OnTokenFetched(const std::string& token,
     54                         const std::string& shared_secret) {
     55       ASSERT_FALSE(on_token_fetched_.is_null());
     56       TokenFetchedCallback on_token_fetched = on_token_fetched_;
     57       on_token_fetched_.Reset();
     58       on_token_fetched.Run(token, shared_secret);
     59     }
     60 
     61    private:
     62     TokenFetchedCallback on_token_fetched_;
     63   };
     64 
     65   class FakeTokenValidator : public TokenValidator {
     66    public:
     67     FakeTokenValidator()
     68      : token_url_(kTokenUrl),
     69        token_scope_(kTokenScope) {}
     70 
     71     virtual ~FakeTokenValidator() {}
     72 
     73     virtual void ValidateThirdPartyToken(
     74         const std::string& token,
     75         const TokenValidatedCallback& token_validated_callback) OVERRIDE {
     76       ASSERT_FALSE(token_validated_callback.is_null());
     77       on_token_validated_ = token_validated_callback;
     78     }
     79 
     80     void OnTokenValidated(const std::string& shared_secret) {
     81       ASSERT_FALSE(on_token_validated_.is_null());
     82       TokenValidatedCallback on_token_validated = on_token_validated_;
     83       on_token_validated_.Reset();
     84       on_token_validated.Run(shared_secret);
     85     }
     86 
     87     virtual const GURL& token_url() const OVERRIDE {
     88       return token_url_;
     89     }
     90 
     91     virtual const std::string& token_scope() const OVERRIDE {
     92       return token_scope_;
     93     }
     94 
     95    private:
     96     GURL token_url_;
     97     std::string token_scope_;
     98     base::Callback<void(const std::string& shared_secret)> on_token_validated_;
     99   };
    100 
    101  public:
    102   ThirdPartyAuthenticatorTest() {}
    103   virtual ~ThirdPartyAuthenticatorTest() {}
    104 
    105  protected:
    106   void InitAuthenticators() {
    107     scoped_ptr<TokenValidator> token_validator(new FakeTokenValidator());
    108     token_validator_ = static_cast<FakeTokenValidator*>(token_validator.get());
    109     host_.reset(new ThirdPartyHostAuthenticator(
    110         host_cert_, key_pair_, token_validator.Pass()));
    111     scoped_ptr<ThirdPartyClientAuthenticator::TokenFetcher>
    112         token_fetcher(new FakeTokenFetcher());
    113     token_fetcher_ = static_cast<FakeTokenFetcher*>(token_fetcher.get());
    114     client_.reset(new ThirdPartyClientAuthenticator(token_fetcher.Pass()));
    115   }
    116 
    117   FakeTokenFetcher* token_fetcher_;
    118   FakeTokenValidator* token_validator_;
    119 
    120  private:
    121   DISALLOW_COPY_AND_ASSIGN(ThirdPartyAuthenticatorTest);
    122 };
    123 
    124 TEST_F(ThirdPartyAuthenticatorTest, SuccessfulAuth) {
    125   ASSERT_NO_FATAL_FAILURE(InitAuthenticators());
    126   ASSERT_NO_FATAL_FAILURE(RunHostInitiatedAuthExchange());
    127   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, client_->state());
    128   ASSERT_NO_FATAL_FAILURE(token_fetcher_->OnTokenFetched(
    129       kToken, kSharedSecret));
    130   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, host_->state());
    131   ASSERT_NO_FATAL_FAILURE(
    132       token_validator_->OnTokenValidated(kSharedSecret));
    133 
    134   // Both sides have finished.
    135   ASSERT_EQ(Authenticator::ACCEPTED, host_->state());
    136   ASSERT_EQ(Authenticator::ACCEPTED, client_->state());
    137 
    138   // An authenticated channel can be created after the authentication.
    139   client_auth_ = client_->CreateChannelAuthenticator();
    140   host_auth_ = host_->CreateChannelAuthenticator();
    141   RunChannelAuth(false);
    142 
    143   StreamConnectionTester tester(host_socket_.get(), client_socket_.get(),
    144                                 kMessageSize, kMessages);
    145 
    146   tester.Start();
    147   message_loop_.Run();
    148   tester.CheckResults();
    149 }
    150 
    151 TEST_F(ThirdPartyAuthenticatorTest, ClientNoSecret) {
    152   ASSERT_NO_FATAL_FAILURE(InitAuthenticators());
    153   ASSERT_NO_FATAL_FAILURE(RunHostInitiatedAuthExchange());
    154   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, client_->state());
    155   ASSERT_NO_FATAL_FAILURE(
    156       token_fetcher_->OnTokenFetched(kToken, std::string()));
    157 
    158   // The end result is that the client rejected the connection, since it
    159   // couldn't fetch the secret.
    160   ASSERT_EQ(Authenticator::REJECTED, client_->state());
    161 }
    162 
    163 TEST_F(ThirdPartyAuthenticatorTest, InvalidToken) {
    164   ASSERT_NO_FATAL_FAILURE(InitAuthenticators());
    165   ASSERT_NO_FATAL_FAILURE(RunHostInitiatedAuthExchange());
    166   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, client_->state());
    167   ASSERT_NO_FATAL_FAILURE(token_fetcher_->OnTokenFetched(
    168       kToken, kSharedSecret));
    169   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, host_->state());
    170   ASSERT_NO_FATAL_FAILURE(token_validator_->OnTokenValidated(std::string()));
    171 
    172   // The end result is that the host rejected the token.
    173   ASSERT_EQ(Authenticator::REJECTED, host_->state());
    174 }
    175 
    176 TEST_F(ThirdPartyAuthenticatorTest, CannotFetchToken) {
    177   ASSERT_NO_FATAL_FAILURE(InitAuthenticators());
    178   ASSERT_NO_FATAL_FAILURE(RunHostInitiatedAuthExchange());
    179   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, client_->state());
    180   ASSERT_NO_FATAL_FAILURE(
    181       token_fetcher_->OnTokenFetched(std::string(), std::string()));
    182 
    183   // The end result is that the client rejected the connection, since it
    184   // couldn't fetch the token.
    185   ASSERT_EQ(Authenticator::REJECTED, client_->state());
    186 }
    187 
    188 // Test that negotiation stops when the fake authentication is rejected.
    189 TEST_F(ThirdPartyAuthenticatorTest, HostBadSecret) {
    190   ASSERT_NO_FATAL_FAILURE(InitAuthenticators());
    191   ASSERT_NO_FATAL_FAILURE(RunHostInitiatedAuthExchange());
    192   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, client_->state());
    193   ASSERT_NO_FATAL_FAILURE(token_fetcher_->OnTokenFetched(
    194       kToken, kSharedSecret));
    195   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, host_->state());
    196   ASSERT_NO_FATAL_FAILURE(
    197       token_validator_->OnTokenValidated(kSharedSecretBad));
    198 
    199   // The end result is that the host rejected the fake authentication.
    200   ASSERT_EQ(Authenticator::REJECTED, client_->state());
    201 }
    202 
    203 TEST_F(ThirdPartyAuthenticatorTest, ClientBadSecret) {
    204   ASSERT_NO_FATAL_FAILURE(InitAuthenticators());
    205   ASSERT_NO_FATAL_FAILURE(RunHostInitiatedAuthExchange());
    206   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, client_->state());
    207   ASSERT_NO_FATAL_FAILURE(
    208       token_fetcher_->OnTokenFetched(kToken, kSharedSecretBad));
    209   ASSERT_EQ(Authenticator::PROCESSING_MESSAGE, host_->state());
    210   ASSERT_NO_FATAL_FAILURE(
    211       token_validator_->OnTokenValidated(kSharedSecret));
    212 
    213   // The end result is that the host rejected the fake authentication.
    214   ASSERT_EQ(Authenticator::REJECTED, client_->state());
    215 }
    216 
    217 }  // namespace protocol
    218 }  // namespace remoting
    219